In this paper, we propose a new architecture of photomixer in order to develop a wideband and powerful photomixing THz source. It is achieved by a velocity-matched distributed photoconductor, in which the pump optical power is guided in a dielectric optical guide and slightly coupled to a low-temperature grown GaAs 1-mm-length photoconductor.
Thin-film microstrip lines and a grounded coplanar waveguide using a cyclic-olefin copolymer as low-loss thin film have been fabricated and characterised up to 220 GHz. Attenuation as low as 0.6 dB/mm around 220 GHz has been measured on a grounded coplanar waveguide with a 22 m-thick cyclic-olefin copolymer thin film.
We report the continuous wave generation delivered by on ion-irradiated In0.53Ga0.47As photomixers coupled to transverse-electromagnetic-horn antenna using two lasers operating at ~1.55 μm wavelength. Output powers up to 0.1 μW at 700 GHz have been achieved. The output power in a regime of Ohmic transport or recombination-limited transport is analyzed.
We report on-wafer measurements of planar transmission lines on quartz substrate at J-band. We have fabricated and characterized as well CPW than Planar Goubau-Sommerfeld Lines (PGSL) up to 325 GHz. The transmission level is relatively good for straight PGSL but we can notice higher losses for structures with two 90deg-bendings. Different metallization have also been used for the study of metallic...
We present measurements and electromagnetic simulations of planar Goubau lines (PGL) on quartz substrate up to 1 THz. PGLs are single strip transmission lines. A very high-efficiency planar transition between a standard coplanar waveguide (CPW) and PGL is demonstrated A time-domain electroabsorption sampling method is used to measure the reflected and transmitted waveforms. Transmission of picosecond...
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